Abstract: Hydrogen-water liquid phase catalytic exchange(LPCE) is an effective way to treat tritiated wastewater. The styrene-divinylbenzene copolymer(SDB) as a hydrophobic carrier is a key material for LPCE, which may affect the dispersion and stability of active component Pt. In this paper, the styrene-divinylbenzene copolymer(Y-CeO₂/SDB) was modified by nano-CeO₂ through in-situ polymerization, which possesses large specific surface area and exhibit superhydrophobic(static water contact angle is 152.96°), high strength (113.54 N), and excellent thermal stability. The adsorption characteristics of Ni²⁺ by SDB and Y-CeO₂/SDB carriers were studied. The results show that Ni2+ is adsorbed by SDB mainly through physical process, but by Y-CeO₂/SDB mainly through chemical process.